BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Heavy quark diffusion coefficient in the light of Gribov-Zwanziger action DTSTART;VALUE=DATE-TIME:20221116T101000Z DTEND;VALUE=DATE-TIME:20221116T103000Z DTSTAMP;VALUE=DATE-TIME:20260907T220723Z UID:indico-contribution-79-727@events.vecc.gov.in DESCRIPTION:Speakers: Sadaf Madni (National Institute of Science Education and Research)\nAs a result relativistic heavy ion collision in Large Hadr on Collider(LHC) at CERN and Relativistic Heavy Ion Collider(RHIC)\, at Br ookhaven National Laboratory(BNL)\,the constituent of those\, namely Quark s and Gluons deconfined for a short amount of time\, and its internal(colo r) degrees of freedom governs its dynamics. The deconfinement of the nucle ar matter happens at bizzare temperature of ∼ 150 MeV which results in t he emergence of a new state of matter\, identified as Quark Gluon Plasma(Q GP). A well-established result that deconfined matter is not a free gas of quarks and gluons but rather strongly interacting and correlated system s ignals to incorporate dissipative hydrodynamics as a tool to extract the p roperties of this extremely dense matter\, QGP\, in the form of various tr ansport coefficients. Due to the rapid thermalization of the produced part icles as a result of collision\, characterizing the plasma state of matter based on the information provided in the final stage becomes a head scrat ching task.\nHeavy quarks are produced in the pre-equilibrium phase i.e. b efore the formation of QGP. The long relaxation time of heavy quark make i t an apt tool to diagnose QGP.\nThe study of quarks and gluons falls under perturbative QCD as well as non-\nperturbative QCD. While the perturbativ e QCD has been well developed\, the\nanalytical and numerical solution of non-perturbative QCD has still a long way to go. One of the non-perturbati ve approaches that seem quite promising in the non-perturbative scale is g iven by Gribov\, which later was updated by Zwanziger by formulating renor malizable action at finite temperature\, termed as Gribov-Zwanziger(GZ) ac tion. Within the GZ action\, the gluon propagator in covariant gauge is ex pressed as:\n$$D^{\\mu\\nu}(P)=\\left[\\delta^{\\mu\\nu}-(1-\\xi)\\frac\n{ P^{\\mu}P^{\\nu}}{P^2}\\right]\\left(\\frac{P^2}{P^4+\\gamma_G^4}\\right)~ \,$$\nwhere $\\xi$ is the gauge parameter and $\\gamma_G$ is termed as the Gribov parameter\, which is fixed either by matching the thermodynamic qu antities with lattice equation of state or by solving one loop gap equatio n. I calculated the diffusion coefficient of heavy quark(in gluonic medium ) under Gribov prescription and match it with lattice data available in th e range $1 \\le (T/T_c)\\le 5$. We noticed that it has a good agreement wi th the lattice data.\n\nhttps://events.vecc.gov.in/event/18/contributions/ 727/ LOCATION:Ajay Divatia Lecture Hall\, VECC URL:https://events.vecc.gov.in/event/18/contributions/727/ END:VEVENT BEGIN:VEVENT SUMMARY:Do quarkonia thermalize at the LHC? DTSTART;VALUE=DATE-TIME:20221116T095000Z DTEND;VALUE=DATE-TIME:20221116T101000Z DTSTAMP;VALUE=DATE-TIME:20260907T220723Z UID:indico-contribution-79-726@events.vecc.gov.in DESCRIPTION:Speakers: Nachiketa Sarkar (National Institute of Science Educ ation and Research)\nWe analyze the relative yields of different bottomoni a and charmonia states produced in Pb+Pb collisions at LHC\, within an ide al hadron resonance gas framework. The underlying assumption is the early thermalization and subsequent freezeout of these heavy hadrons resulting i n their chemical freezeout at a temperature\, significantly higher than th at of light and strange hadrons. The systematic dependence of the freezeou t temperature on the collision energy and centrality is investigated in de tail.\n\nhttps://events.vecc.gov.in/event/18/contributions/726/ LOCATION:Ajay Divatia Lecture Hall\, VECC URL:https://events.vecc.gov.in/event/18/contributions/726/ END:VEVENT BEGIN:VEVENT SUMMARY:Diffusion of Heavy Quark in a hot and magnetic Quark Gluon Plasma- perturbative vs non perturbative DTSTART;VALUE=DATE-TIME:20221116T093000Z DTEND;VALUE=DATE-TIME:20221116T095000Z DTSTAMP;VALUE=DATE-TIME:20260907T220723Z UID:indico-contribution-79-725@events.vecc.gov.in DESCRIPTION:Speakers: Surasree Mazumder (Indian Institute of Technology Ga ndhinagar)\nThe recent studies have indicated an existence of a strong mag netic field in non central Heavy Ion Collisions(HICs). Though strong to be gin with the field decays fast. It is still possible for the magnetic fiel d to exist in the thermalised Quark Gluon Plasma(QGP) depending on the ele ctrical conductivity of the medium. If a significant amount of magnetic fi eld is present in the medium\, it will affect various aspects. We have cal culated different diffusion coefficients of Heavy Quark(HQ)\, a very good probe of QGP\, in presence of a strong magnetic field inside a hot QGP in some of our recent works. It is well established that perturbative QCD des cription is not enough in order to explain certain experimental observatio ns at the low to intermediate $p_T$ region of HQ and at temperatures close to the critical temperature. There are various studies approaching the no n-perturbative calculation from various vantage points within the framewor k of perturbative QCD\, like T-matrix and potential approach. \nIn this pr esent work\, we have considered the complex HQ potential in presence of a strong magnetic field in a hot QGP and posed it as effective gluon propaga tor. The part of the potential which is Yukawa type is responsible for the perturbative and the string part is responsible for the non-perturbative contribution. We calculate the scattering rate of HQ interacting elastical ly with the medium light quarks/anti-quarks and gluons.and consequently\, estimate the various diffusion coefficients for two cases: 1) HQ velocity is along the direction of the magnetic field and 2) HQ velocity in the per pendicular direction to the magnetic field.\nWe have compared the perturba tive diffusion coefficients with their non-perturbative counterparts in p resence of a strong magnetic field for the first time. Though the perturba tive contribution is always dominant over that due to non-perturbative\, t he difference between those two is lower at lower temperatures rendering t he non-perturbative estimation more important at the lower temperatures. A t higher temperatures\, the asymptotic freedom enhances perturbative contr ibution while the lower value of string tension (taken from finite tempera ture lattice calculations) or confinement reduces non-pertubative effect. All these might have profound effect on various experimental observations. \n\nhttps://events.vecc.gov.in/event/18/contributions/725/ LOCATION:Ajay Divatia Lecture Hall\, VECC URL:https://events.vecc.gov.in/event/18/contributions/725/ END:VEVENT BEGIN:VEVENT SUMMARY:Experimental status on charmonium production at LHC DTSTART;VALUE=DATE-TIME:20221116T090000Z DTEND;VALUE=DATE-TIME:20221116T093000Z DTSTAMP;VALUE=DATE-TIME:20260907T220723Z UID:indico-contribution-79-753@events.vecc.gov.in DESCRIPTION:Speakers: Biswarup Paul ()\nhttps://events.vecc.gov.in/event/1 8/contributions/753/ LOCATION:Ajay Divatia Lecture Hall\, VECC URL:https://events.vecc.gov.in/event/18/contributions/753/ END:VEVENT END:VCALENDAR